Car-brake



(No Model.)

E. R.BR1ST0L.,

4CAR BRAKE.

No. 281,445. Pate-nrpgaguy 17. lasf Tip IJWENTOR Mdm Ta through its slot c.

A UNITED STATES` PATENT OFFICE.

EDMUND It. BRISTOL, Oli MADISON, WISCONSIN.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 281,445, dated vJuly 1'7, 1883.

Application filed May 2G. Issa (No model.)

To all whom it may concern.-

Be it known that I, EDMUND R. BRIsToL, of Madison, in the county of Dane, and in the State of Wisconsin, have invented certain new and useful Improvements in Car-Brakes; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to railroad ear-brakes; and it consists in certain connections whereby the brake-lever is made to lengthen and short-V en, according to the weight of the car.

rIhe drawing illustrates one end of the braking mechanism of a car embodying Iny invention.

A represents aportion of the oor of a car; B, the transom, from which a bracket, B', extends at right angles; and this bracket carries lugs b,which are perforated to receive a bolt, b; and between the lugs b a slotted lever, C, is placed upon the bracket, the bolt b passing D2 is thebrake-beam. The upper end of lever O is rounded to form a ball, c', which fits in a socket, a, on the under side of the bottom or floor of the car, and the lower end of lever C extends down and out, as shown in the drawing, where it is bifurcated, so as to straddle the sectional lever D D and pass between the ends of bolts d cl. The leversection Dcarries aloop, d', just above the lugs or bolts d, and the lever D carries a removable loop, dl, at its upper end, and therefore to unite the two the loop d2 is removed vand the loop d slipped overthe lever D', and then the loop d2 is slipped over both levers and bolted in place on lever D, so that the section D will be free to slide up andv down on lever D. The lever C is then placed upon the bracket B and its lower end projected between bolts d, after which its upper end is secured in socket a, and bolt b passed through slot c, and the brake-rods E connected.

acting upon the upper one of bolts d, will lift section D of the brake-lever, and thus increase its power; and when the car is light, an opposite effect will be produced, so that the amount of braking-power will always be proportioned to the weight of the car, and the pressure of the brakes will never be so great as to entirely stop the revolution of the wheels while the car is in motion.. The forward throw of lever is permitted by slot c to allow for lost motion, which would have a tendency to strain the parts.

My improved connection will be found especially useful where there is an elastic connection between the brake-shoe and the braking force-as, for instance, in my patent of January 16, 1883, No. 27 0,7 32.

I do not mean to confine myself herein to the exact form of lever C or its connections, as they may be varied in many ways without departing from the spirit of my invention.

What I claim as new, and desire to secure by Letters Patent, is-

1. The brake-lever made in two parts, and connected with the bottom of the car by a 1ever, C, substantially as set forth.

2. The combination of sectional brake-lever D D, lever O, bracket B', and transom with the brake-rod, as set forth.

In testimony that I claim the foregoing I have hereunto set my hand, on this 27th day of April, 1883, in the presence of two witnesses.

EDMUND B. BRISTOL.

Vitnesses:

S. S. SroUT, f H. G. UNDERwooD. 

